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andriy [413]
3 years ago
9

Your mother takes you to your grandparents’ house for dinner. She drives 60 minutes at a constant speed of 40 miles per hour. Sh

e reaches the highway, quickly speeds up, and drives for another 30 minutes at a constant speed of 70 miles per hour. (Remember, change your minutes into HOURS before doing any computing!)
Mathematics
1 answer:
SIZIF [17.4K]3 years ago
5 0

Answer:

A!

Step-by-step explanation:

i looked it up

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3 tenths divided by 4
kondor19780726 [428]
³/₁₀ ÷ 4
³/₁₀ ÷ ⁴/₁
³/₁₀ × ¹/₄
³/₄₀
6 0
4 years ago
Which is the range of the function f(x) =One-seventh(9)x?
shutvik [7]

Answer:

Option c: all real numbers greater than 0

Step-by-step explanation:

we have

f(x)=\frac{1}{7}(9^{x})

This is a exponential function of the form

f(x)=a(b^{x})

where

a is the initial value (y-intercept)

b is the base

r is the rate

b=(1+r)

In this problem we have

a=1/7

b=9

r=b-1 ----> r=9-1=8 -----> r=800%

using a graphing tool

see the attached figure

The domain is the interval ------> (-∞,∞)

The domain is all real numbers

The range is the interval ---------> (0,∞)

The range is all real numbers greater than zero

6 0
3 years ago
Read 2 more answers
System Of Equations Elimination Method
andre [41]
1. x = 3, y = 2
2. x = -99/68, y = -14/17
3. x = -4, y = 1
4. x = 1, y = 5
5. x = -1, y = 0
6. x = 2, y = -3
7. x = 14, y = 20

I attached the pictures with the work.

5 0
3 years ago
The sale tax in a certain state is 5 1/2%. What would be the tax on an item that costs $535.00
nexus9112 [7]

Answer:

$29.43

Step-by-step explanation:

5 1/2 % or 5.5% is 0.055 as a decimal.  Multiply 535 by 0.055 to find what 5.5% of 535 is...

0.055(535) = 29.425

Since we're working with dollars, round to the nearest hundredth, which is

$29.43

7 0
4 years ago
Simplify: (10*5+6)(13+2)+19
lianna [129]
The answer would be 859.  

<span><span><span><span><span><span>(10)</span><span>(5)</span></span>+6</span>)</span><span>(<span>13+2</span>)</span></span>+19
</span><span>=<span><span><span>(<span>50+6</span>)</span><span>(<span>13+2</span>)</span></span>+19
</span></span><span>=<span><span>56<span>(<span>13+2</span>)</span></span>+19
</span></span><span>=<span><span><span>(56)</span><span>(15)</span></span>+19
</span></span><span>=<span>840+19
</span></span><span>=<span>859

Hope this helps!!

</span></span>
7 0
3 years ago
Read 2 more answers
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